[Samba] winbind causes Linux to lockup when connectivity to AD is lost (subject line edited for clarity)

[Jeremy Allison]

On Fri, Oct 23, 2009 at 02:34:45PM -0600, Robert LeBlanc wrote:
> 3.4.2
> 
> Robert LeBlanc
> Life Sciences & Undergraduate Education Computer Support
> Brigham Young University
> 
> 
> On Fri, Oct 23, 2009 at 1:23 PM, Jeremy Allison <jra at samba.org> wrote:
> 
>     On Fri, Oct 23, 2009 at 01:19:46PM -0600, Robert LeBlanc wrote:
>     > Here is a capture of top at the time:
>     >
>     >   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>     >  5842 root      20   0  873m 6912 4612 S  0.0  0.4   0:01.20 winbindd
>     >  5848 root      20   0  872m 3260 2272 S  0.0  0.2   0:00.08 winbindd
>     >  5849 root      20   0  872m 3640 2652 S  0.0  0.2   0:00.06 winbindd
>     >  5850 root      20   0  872m 3320 2200 S  0.0  0.2   0:00.06 winbindd
>     >  5859 root      20   0  874m 2684 1448 S  0.0  0.2   0:00.00 winbindd
>     >  5954 root      20   0  872m 3740 2284 S  0.0  0.2   0:00.02 winbindd
>     >  5955 root      20   0  872m 3804 2348 S  0.0  0.2   0:00.04 winbindd
>     >  6025 root      20   0  873m 1544    4 S  0.0  0.1   0:00.00 winbindd
>     >  6026 root      20   0  873m 1548    4 S  0.0  0.1   0:00.00 winbindd
>     >  6518 root      20   0  873m 5048 3476 S  0.0  0.3   0:00.00 winbindd
>     >  6576 root      20   0  873m 6228 4232 S  0.0  0.4   0:00.00 winbindd
>     >     5 root      RT  -5     0    0    0 S  0.0  0.0   0:00.00 watchdog/0
>     >   529 root      16  -4 21076  632    0 S  0.0  0.0   0:00.16 udevd
>     >  6574 root      20   0 18824 1264  940 R  0.0  0.1   0:00.10 top
>     >  1761 root      20   0  5904  320  184 S  0.0  0.0   0:00.06 syslogd
>     >  1805 root      20   0 48868  720  216 S  0.0  0.0   0:00.00 sshd
>     >  5768 root      20   0 78572  916  200 S  0.0  0.1   0:00.14 sshd
> 
>     Well 873m is a little excessive, even for virtual memory :-).
>     That's a memory leak I'd guess.  What winbindd version is this ?

Ok, can you get a message pool usage dump by doing:

smbcontrol <pid> pool-usage

on one of the monstrous winbindd processes please ?

Thanks,

	Jeremy.